05000461/FIN-2016008-01
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Finding | |
|---|---|
| Title | Failure to Perform and Adequate Equipment Apparent Cause Evaluation |
| Description | The inspectors identified a finding of very-low safety significance (Green), and an associated Non-Cited Violation of Title 10, Code of Federal Regulations, Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the licensees failure to follow Step 4.3.4 of procedure PI-AA-125, Corrective Action Program Procedure. Specifically, the licensee failed to perform Class B Equipment Apparent Cause Evaluation (EACE) 2381871, 1SX01PC Failed to Start for Testing, in accordance with PI-AA-125-1003, Apparent Cause Evaluation Manual, because they: (1) failed to analyze each causal factor to determine contributing causes as required by Step 4.4.1.2; and (2) failed to assign an effectiveness review for the EACE as required by Step 4.4.9.1. The licensee entered this finding into their Corrective Action Program and revised their EACE to: (1) include three contributing causes; (2) upgrade a corrective action to a corrective action to prevent recurrence; and (3) assign an effectiveness review to determine the effectiveness of the corrective action to prevent recurrence. The performance deficiency was determined to be more than minor because if left uncorrected, it would have the potential to lead to a more significant safety concern. Specifically, an effectiveness review is required to provide assurance that the Division 3 SX pump design change is successful in preventing recurrence of pump failure before another pump failure occurs, which would be a more significant safety concern. The finding impacted the Mitigating Systems Cornerstone and screened as having very-low safety significance (Green) because although the finding is a deficiency ultimately affecting the design or qualification of the Division 3 SX pump, the pump still maintains its operability. The inspectors determined this finding had an associated cross-cutting aspect in the area of Human Performance (Conservative Bias) because although a B Apparent Cause Evaluation may have been allowable for investigating the failure of the Division 3 SX pump, had an A Root Cause Analysis been performed, a more rigorous investigation process would have been used to identify contributing causes, assign corrective actions, and identify effectiveness reviews for the failure of the Division 3 SX pump. |
| Site: | Clinton  |
|---|---|
| Report | IR 05000461/2016008 Section 4OA4 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 95001 |
| Inspectors (proximate) | L Rodriguez M Jones R Orlikowski |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Clinton - IR 05000461/2016008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Clinton) @ 2015Q1
Self-Identified List (Clinton)
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